Dry Ice Cleaning
Cryogenesis Dry Ice Cleaning is the advanced and environmentally responsible technology that is used in many industries for surface preparation and preventative maintenance cleaning. Cryogenesis works by using particles of solid carbon dioxide (dry ice) in the form of 1/8” diameter pellets. The particles are accelerated at subsonic or supersonic speeds from the blast unit through nozzle. The nozzle can be either hand held or automated for inline processes.
Upon impacting the surface, the dry ice immediately sublimates, turning from a solid directly into a harmless gas leaving no secondary waste to contend with like other blast media applications. The technology is also non-abrasive so it will not damage the substrate being cleaned making it appropriate for use on many types of surfaces from delicate to hard. Cryogenesis is also a dry process which makes it suitable for cleaning on and around electrical components.
There are three basic principles on how the dry ice works:
Kinetic energy of the dry ice impacting the substrate is the primary mode of cleaning, whereby the energy from the dry ice impacting the substrate knocks off the contaminant.
In some applications like hard resins, the cold temperature of the dry ice impacting the substrate causes a small thermal differential between the contaminant and the substrate. This promotes cracking and delamination, thus facilitating the removal process.
As the dry ice impacts the surface and converts from a solid into a gas, the gas tends to invade cracks and pore spaces to get under the coating/contaminant. Then as it warms it rapidly expands pushing or lifting the coating/contaminant from the substrate further assisting in the cleaning process.